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Silver rectangular rack-mount switch with front ventilation and port array

HPE Juniper Networking

HPE Juniper Networking EX4300-48TProduct 48-port switch module

SKU CH-7MV4-66CTS MPN EX4300-48TProduct

A 48-port Ethernet switch module supporting Layer 2 and Layer 3 switching with Virtual Chassis technology to interconnect up to 10 switches as a single device

  • 48 copper ports support high-density Gigabit access
  • Virtual Chassis links up to 10 units as one logical switch
  • Layer 2 and Layer 3 features handle campus and data-centre workloads
  • 40 Gb uplinks provide high-speed aggregation between switches
  • Pay-as-you-grow stacking scales capacity without redesigning the network

48-port Ethernet switch for scalable networks

The Juniper EX4300-48T delivers 48 Gigabit Ethernet ports in a stackable platform. It suits data centre, campus and branch office deployments that need Layer 2 and Layer 3 capabilities. Virtual Chassis technology lets up to 10 switches operate as a single logical device. The pay-as-you-grow architecture matches expanding network requirements without a large initial outlay.

Thermals noise and power in normal use

The switch runs carrier-class hardware designed for continuous operation in rack environments. Front-to-back airflow aligns with standard data centre hot-aisle and cold-aisle layouts. Acoustic output stays within limits expected for wiring-closet and equipment-room installation. Power consumption scales with port utilisation and connected PoE loads where applicable.

Behaviour under sustained load

Virtual Chassis interconnects use 40 GbE uplinks to maintain full switching capacity across the stack. The control plane remains stable when all 48 ports carry traffic simultaneously. Layer 3 forwarding tables and routing protocols converge without interruption during extended peak periods. The architecture avoids the bottlenecks that appear in standalone uplinks when traffic is sustained.

Highlights

  • 48 copper ports support high-density Gigabit access
  • Virtual Chassis links up to 10 units as one logical switch
  • Layer 2 and Layer 3 features handle campus and data-centre workloads
  • 40 Gb uplinks provide high-speed aggregation between switches
  • Pay-as-you-grow stacking scales capacity without redesigning the network

Specifications

BrandJuniper

Questions about this item

How do I install the EX4300-48T into a rack and what step is often missed?

Mount the 48-port switch in a standard rack, connect power, then link up to 10 units with Virtual Chassis cables and configure the single logical device; the step often missed is completing the Virtual Chassis configuration after physical cabling.

What maintenance or replacement will the EX4300-48T need later?

The switch uses internal cooling fans and redundant power supplies that may require replacement after extended operation; plan for fan and power-supply module swaps during scheduled maintenance windows.

What limit appears first on the EX4300-48T under sustained heavy traffic?

The 48 Gigabit Ethernet ports and 40 Gbps uplinks can saturate total switching capacity, so aggregate throughput across all ports becomes the first bottleneck during sustained high-volume loads.

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